OneFinger Task Switch allows you assigning a function key as the task switch key, when you press the task switch key, it will list all open programs in a pop up window, then you can select the program you want to work. If there are more than 12 programs running, it will divide the list into multiple pages, each one contains 12 open programs, you can than use left/right arrow key or mouse wheel to change to different pages.

The license of this software is Freeware, you can free download and free use this desktop utility software.